v3.26.3
Insider Trading Arrangements
 3 Months Ended
Sep. 30, 2026
shares
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
Certain of our executive officers and directors have entered into trading plans pursuant to Rule 10b5-1(c) of the Securities Exchange Act of 1934, as amended. A trading plan is a written document that pre-establishes the amounts, prices and dates (or formula for determining the amounts, prices and dates) of future purchases or sales of our common stock, including the sale of shares acquired pursuant to the Monolithic Power Systems, Inc. 2004 Employee Stock Purchase Plan, amended and restated, and upon vesting of RSUs.
The following table summarizes the termination of trading plans intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) during the three months ended September 30, 2026:
Name and TitleTermination DateOriginal Plan DurationIntended Sale Amount (in shares)Sold Amount (in shares)
Deming Xiao, Executive Vice President, Global Operations
August 4, 2026
Through May 19, 2027
Up to 80,000
-
Maurice Sciammas, Executive Vice President, Worldwide Sales and Marketing
August 4, 2026
Through December 31, 2026
Up to 42,000
27,000
Michael Hsing, President, Chief Executive Officer and Director
September 28, 2026
Through May 29, 2027
Up to 60,000
30,000
During the three months ended September 30, 2026, no trading plans intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) were adopted or modified. During the three months ended September 30, 2026, our executive officers were granted equity awards (including the 2026 Executive MPSUs) containing mandatory “sell to cover” provisions upon vesting for applicable tax withholding. No other written trading arrangements that are not intended to qualify for the Rule 10b5-1(c) affirmative defense were adopted, modified, or terminated.
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Terminated false
Deming Xiao, Termination [Member]  
Trading Arrangements, by Individual  
Name Deming Xiao
Title Executive Vice President, Global Operations
Rule 10b5-1 Arrangement Terminated true
Termination Date August 4, 2026
Expiration Date May 19, 2027
Aggregate Available 80,000
Maurice Sciammas, Termination [Member]  
Trading Arrangements, by Individual  
Name Maurice Sciammas
Title Executive Vice President, Worldwide Sales and Marketing
Rule 10b5-1 Arrangement Terminated true
Termination Date August 4, 2026
Expiration Date December 31, 2026
Aggregate Available 42,000
Michael Hsing, Termination [Member]  
Trading Arrangements, by Individual  
Name Michael Hsing
Title President, Chief Executive Officer and Director
Rule 10b5-1 Arrangement Terminated true
Termination Date September 28, 2026
Expiration Date May 29, 2027
Aggregate Available 60,000
Deming Xiao, Adoption [Member]  
Trading Arrangements, by Individual  
Arrangement Duration 365 days
Michael Hsing [Member]  
Trading Arrangements, by Individual  
Arrangement Duration 365 days
Saria Tseng [Member]  
Trading Arrangements, by Individual  
Arrangement Duration 365 days